Imaging members

Abstract

A photoconductive imaging member containing a photogenerating layer, a charge transport layer, or a plurality of charge transport layers, and which charge transport, especially the top charge transport layer contains a vinyl containing organic compound.

1. An imaging member comprising a photogenerating layer, and a transport layer comprised of a charge transport component, polymer binder and from about 1 to about 15 weight percent based on the total weight of the charge transport layer an organic liquid compound additive with a vinyl terminated group or groups having a boiling point of at least about 200° C., and which functions primarily as an antiozonant. 
     
     
       2. An imaging member in accordance with  claim 1  wherein said charge transport layer contains from about 35 to about 65 weight percent of charge transport components and said binder is a polycarbonate. 
     
     
       3. An imaging member in accordance with  claim 2  wherein said liquid content in the charge transport layer is from weight percent based on the total weight of the charge transport layer. 
     
     
       4. An imaging member in accordance with  claim 1  wherein said charge transport layer comprises a plurality of from about 2 to about 10 charge transport layers. 
     
     
       5. An imaging member in accordance with  claim 4  wherein said plurality is from about 2 to about 7 layers. 
     
     
       6. An imaging member in accordance with  claim 4  wherein said top layer contains from about 10 to about 75 weight percent of said charge transport component. 
     
     
       7. An imaging member in accordance with  claim 1  wherein said vinyl compound is a liquid carbonate monomer. 
     
     
       8. An imaging member in accordance with  claim 7  wherein said carbonate is of the formula
   R 1 —O—CO 2 —R 2 —O—R 2 —CO—O—R 1   
 
       wherein each R 1  is an unsaturated vinylic group with from about 3 to about 40 carbon atoms, and R 2  is an alkyl with 1 to about 50 carbon atoms. 
     
     
       9. An imaging member in accordance with  claim 8  wherein said carbonate possesses a boiling point equal to about or in excess of about 200° C. 
     
     
       10. An imaging member in accordance with  claim 8  wherein said carbonate possesses a boiling point of from about 265° C. to about 325° C. 
     
     
       11. An imaging member in accordance with  claim 7  wherein said carbonate is of the formula                  
 
       wherein each R 1  is an unsaturated vinylic group with from about 3 to about 40 carbon atoms, and each R 3  and R 4  are alkyl with from about 1 to about 50 carbon atoms. 
     
     
       12. An imaging member in accordance with  claim 11  wherein said carbonate possesses a boiling point equal to about or in excess of about 200° C. 
     
     
       13. An imaging member in accordance with  claim 1  wherein said vinyl compound is an oligomer of polystyrene of the formula                  
 
       wherein R represents the degree of polymerization. 
     
     
       14. An imaging member in accordance with  claim 1  wherein said antiozonant is a carbonate present in an amount of from about 1 to about 15 weight percent. 
     
     
       15. An imaging member in accordance with  claim 1  further containing in said charge transport layer a hindered phenol. 
     
     
       16. An imaging member in accordance with  claim 15  wherein said hindered phenol is present in said charge transport layer in an amount of from about 1 to about 15 weight percent. 
     
     
       17. An imaging member in accordance with  claim 15  wherein said hindered phenol is pentaerythritol tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate). 
     
     
       18. An imaging member in accordance with  claim 1  wherein said charge transport layer contains                  
 
       wherein X is alkyl or halo. 
     
     
       19. An imaging member in accordance with  claim 1  further comprising an adhesive layer and an overcoat layer. 
     
     
       20. An imaging member in accordance with  claim 1  further containing a substrate with a thickness of from about 50 to about 1,000 micrometers. 
     
     
       21. An imaging member in accordance with  claim 20  wherein said substrate is in the form of a flexible web, and wherein said substrate possesses a thickness of from about 75 to about 150 micrometers. 
     
     
       22. An imaging member in accordance with  claim 1  further containing a charge blocking layer of zinc oxide, titanium oxide, a silane, a silica, polyvinyl butyral, or a phenolic resin. 
     
     
       23. An imaging member in accordance with  claim 1  wherein said photogenerating layer comprises metal free phthalocyanines, metal phthalocyanines, vanadyl phthalocyanines, perylenes, titanyl phthalocyanines, hydroxy gallium phthalocyanines, selenium, selenium alloys, or mixtures thereof. 
     
     
       24. An imaging member in accordance with  claim 1  wherein said photogenerating layer comprises type V hydroxygallium phthalocyanine. 
     
     
       25. An imaging member in accordance with  claim 1  wherein said polymer binder in the charge transport layer is a polycarbonate. 
     
     
       26. An imaging member in accordance with  claim 25  wherein said polycarbonate polymer binder is present in an amount of from about 25 to about 90 percent by weight. 
     
     
       27. An imaging member in accordance with  claim 1  wherein said member is in the form of a flexible web. 
     
     
       28. An imaging member comprising a photogenerating layer (1) a first charge transport layer in contact with said photogenerating layer and wherein said first charge transport is comprised of a charge transport component, and a resin binder, and thereover and in contact with said first charge transport layer; (2) a plurality of charge transport layers each comprised of a charge transport component, and a resin binder, and wherein said top charge transport layer contains an organic compound additive with a vinyl terminated group or groups having a boiling point of at least about 200° C., and which functions primarily as an antiozonant. 
     
     
       29. An imaging member in accordance with  claim 28  wherein said first layer contains from about 35 to about 75 weight percent of said charge transport components, and wherein said vinyl compound is a solid or a liquid. 
     
     
       30. An imaging member comprising a photogenerating layer, and a transport layer comprised of charge transport components, polymer binder and a vinyl containing antiozonant organic compound, and wherein said vinyl compound is a carbonate monomer of diethylene glycol bisallyl carbonate, diethylene glycol bispropylene carbonate, diethylene glycol bisbutylene carbonate, dipropyl glycol bisallyl carbonate dibutyl glycol bisallyl carbonate, bisphenol A bisallyl carbonate, or bisphenol A bisbutylene carbonate. 
     
     
       31. An imaging member in accordance with  claim 6  wherein said top layer contains from about 35 to about 50 weight percent of said charge transport component. 
     
     
       32. An imaging member in accordance with  claim 14  wherein said carbonate is present in an amount of from about 2 to about 10 weight percent. 
     
     
       33. An imaging member in accordance with  claim 16  wherein said phenol is present in the amount of from about 5 to about 10 weight percent. 
     
     
       34. An imaging member in accordance with  claim 20  wherein said substrate is in the form of a rigid component, and wherein said substrate possesses a thickness of from about 500 to about 1,000 micrometers. 
     
     
       35. An imaging member comprising a photogenerating layer, and a transport layer comprised of a charge transport component, polymer binder and an antiozonant vinyl containing organic compound, and wherein said vinyl compound is a liquid carbonate monomer with a boiling point of from about 265° C. to about 325° C.